The Intrepid Sea, Air & Space Museum is not your typical NYC experience. It is located right on the Hudson river and it's such an interesting experience. You can walk around the boat (and if you're lucky, get invited to an evening shindig there - which is really cool). On the ship you can see information about aircraft launching and all kinds of plan-related things that are pretty interesting. There's really a lot to do and see so leave yourself a good amount of time to enjoy it all.
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